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      4.1.&nbsp;Introduction
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        Linux From Scratch - Version 8.0-systemd
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      <h3>
        Chapter&nbsp;4.&nbsp;Final Preparations
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            Creating the $LFS/tools Directory
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      <h1 class="sect1">
        <a id="prepare-introduction" name="prepare-introduction"></a>4.1.
        Introduction
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        In this chapter, we will perform a few additional tasks to prepare
        for building the temporary system. We will create a directory in
        <code class="filename">$LFS</code> for the installation of the
        temporary tools, add an unprivileged user to reduce risk, and create
        an appropriate build environment for that user. We will also explain
        the unit of time we use to measure how long LFS packages take to
        build, or <span class="quote">&ldquo;<span class=
        "quote">SBUs</span>&rdquo;</span>, and give some information about
        package test suites.
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